| ⇦ | 
| ⇨ |
The correct order of the decreasing ionic radii among the following isoelectronic species are :
Options
(a) Ca²⁺ > K⁺ > S²⁻ > Cl⁻
(b) Cl⁻ > S²⁻ >Ca²⁺ > K⁺
(c) S²⁻ > Cl⁻ >K⁺ >Ca²⁺
(d) K⁺ > Ca²⁺ > Cl⁻ > S²⁻
Correct Answer:
S²⁻ > Cl⁻ >K⁺ >Ca²⁺
Explanation:
Among the isoelectronic species, size increases with the increase in negative charge. Thus S has the highest negative charge and hence largest in size followed by Cl, K and Ca
Related Questions: - Action of acetylene on dilute H₂SO₄ gives
- Nitroethane can exhibit one of the following kind of isomerism
- Which one of the following acids would you expect to be the strongest
- The coordination number of an atom in the simple cubic unit cell in a crystal lattice
- As the alkaline earth metals (except Be) tend to lose their valence electrons
Question Type: Memory
(964)
Difficulty Level: Easy
(1008)
Topics: Classification of Elements and Periodicity
(94)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Action of acetylene on dilute H₂SO₄ gives
- Nitroethane can exhibit one of the following kind of isomerism
- Which one of the following acids would you expect to be the strongest
- The coordination number of an atom in the simple cubic unit cell in a crystal lattice
- As the alkaline earth metals (except Be) tend to lose their valence electrons
Question Type: Memory (964)
Difficulty Level: Easy (1008)
Topics: Classification of Elements and Periodicity (94)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply